今天写了一个简单的运算符重载的例子,结果总是提示错误,后经查阅资料,发现原来是 VC6.0 的一个Bug 作怪,现将代码描述如下:
#ifndef _POINT_H_
#define _POINT_H_
#include <iostream>
using namespace std;
class Point
{
public:
Point(double,double);
friend Point operator+(Point &, Point &);
void Output();
protected:
double m_x;
double m_y;
};
#endif
#define _POINT_H_
#include <iostream>
using namespace std;
class Point
{
public:
Point(double,double);
friend Point operator+(Point &, Point &);
void Output();
protected:
double m_x;
double m_y;
};
#endif
经编译,提示“fatal error C1001: INTERNAL COMPILER ERROR".
一种解决方案是:
将
#include <iostream>
using namespace std;
using namespace std;
替换为
另外一种方案就是:
#include<iostream.h>
#ifndef _POINT_H_
#define _POINT_H_
#include <iostream>
using namespace std;
class Point;
Point operator+(Point &, Point &);
class Point
{
public:
Point(double,double);
friend Point operator+(Point &, Point &);
void Output();
protected:
double m_x;
double m_y;
};
#endif
#define _POINT_H_
#include <iostream>
using namespace std;
class Point;
Point operator+(Point &, Point &);
class Point
{
public:
Point(double,double);
friend Point operator+(Point &, Point &);
void Output();
protected:
double m_x;
double m_y;
};
#endif